Standing-stock and potential of phytoplankton production in the bay of Santos, Brazil

Autores

  • Sônia Maria Flores Gianesella-Galvão Universidade de São Paulo; Instituto de Biociências

DOI:

https://doi.org/10.1590/S1679-87591982000200009

Resumo

Phytoplankton primary production and the maximum photo synthetic index (Pb m) from the region of Bay of Santos were measured every two months during 1976 by simulated incubations using 14C method and incandescent lamps (737 µE.m-2 .s-1a09car01.jpg;40 klux) . The results obtained for production rates (maximum of 204.6 mgC.m-3.hr-1 in winter and 488.3 mgC m-3.hr-1 in summer) are among the highest recorded for tropical marine environments. A high capability of light adaptation under high temperatures was also verified. The photo synthetic indexes obtained were also very high and seems to be due to the high nutrient level of the region. The eutrophic state is supported by the high nutrient and chlorophyll-a concentrations and by the phytoplankton cells number.

Downloads

Publicado

1982-01-01

Edição

Seção

Artigos